"United States Census, 1900," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MS7N-D8W : accessed 6 January 2015), Richard Vernon, Norwood Park Township, Cook, Illinois, United States; citing sheet 4A, family 45, NARA microfilm publication T623, National Archives and Records Administration, Washington, D.C.; FHL microfilm 1,240,294.